Fabrication and investigation of oxygen sensor used gold array microelectrode

Abstract

This paper presents  the  most  recent  results  in  manufacturing  of  oxygen  sensor  based  on gold array microelectrode. Steps of sensor preparation were clearly shown. The electrochemical behavior of home-made gold array  microelectrodes in K₃Fe(CN)₆ medium  with  support electrolyte  using cyclic  voltammetry has been investigated. Several experimental parameters were  conducted, such as investigation of sensor’s reproducibility, stability and  linearity. RSD calculated  after  10  measurements  are  0.14  and  0.05  in  the  atmosphere  and  in  oxygen free solution  respectively. There  is an agreement between data  received by home-made micro oxygen sensor and that by traditional Winkler titration.